Joseph m



(No Model.)

J. M. DUNGAN.

EVAPORATOB..- v No. 284,952. Patented Sept. 11, 1883;

A A v vyw/ mm mmwm L\\\\\\\\\\\\\\ ATTORNEYS.

L wmmssw NVEgTOIhM 7M BY UNITE STATES rricn.

JOSEPH M. DUN CAN, OF WARSAW, NEWV YORK.

EVAPORATOR.

SPECIFICATION forming part of Letters Patent No. 284,952, datedSeptember 11, 1883.

Application filed June 18,1883. (No model.) v

To all whom it may concern:

Be it known that I, .JosEPH M. DUNCAN, of WVarsaw, in the county ofWyoming and State of New York, have invented a new and usefulImprovement in Evaporators, of which the following is a full, clear, andexact description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding. parts in all the figures.

Figure 1 is a plan view of an evaporator, part of the pan being brokenaway. Fig. 2 is a sectional elevation of the upper part of thepartition-wall of the furnace, taken through the line a: m, Fig. 1.Figs. 3, 4, and 5 are the same section as Fig. 2, but showingmodifications of the improvement.

The object of this invention is to prevent the heated products ofcombustion from passing over the partition-wall of the furnace, and

thus passing to the chimney-flue without having passed back and forthbeneath the evaporating-pan, and thus escaping without having giventheir heat to the said pan.

The invention consists in an evaporator con structed with angle-ironsattached to the bottom of the pan to prevent the products of combustionfrom passing between the said pan and the top of the partition-wall ofthe furnace. Upon the top of the partition-wall is placed a cap havingside flanges to overlap the sides of the said wall and a central grooveto receive the angleirons of the pan, as will be hereinafter fullydescribed.

/ A represents the furnace, which is built with a partition-wall, B,extending from the forward end'of the furnace nearly to its rear end, asshown in Fig. 1, so that the products of combustion from thecombustion-chamber G will pass around the rear end of the wall B throughthe flue D, and pass into the chimneyflue E at the forward end of thefurnace A, as

shown in Fig. 1. 1 Y

F is the evaporating-pan, which rests upon the side and end walls of thefurnace A and upon the partition-wall B.

To the bottom of the pan F are riveted or otherwise secured angle-ironsG, which can be made of wrought or cast iron, and which may 'restagainst the sides of the top of the wall B,

as shown in Fig. 4., or in a longitudinal chan- I nel or groove, H,formed in the said top, as

shown in Fig. 5. In the former case the irons top of the wall B, for thepan to rest upon,

which cap can be a tile, as indicated in Fig. 2, or can be made of iron,as may be desired. In either case the cap J should have the groove Halong its middle part to receive one or more angle-irons G to preventthe products of combustion from passing overthe wall B between the cap Jand the bottom of the pan F. Upon the sides of the cap J are formeddownwardly-projecting flanges K to overlap the sides of the top of thewall B, and thus make a closer connection between the said cap and wall.

By thisimprovenient a more even heat will be given to the pan and alarger proportion of the heat will be utilized than when a part of theproducts of combustion are allowed to pass over the top of thepartition-wall.

Having thus fully described my invention,

I claim as new and desire to secure by Letfrom passing over the top ofthe said wall, as

set forth.

2. In an evaporator, the combination, with the evaporating-pan F, thepartition-wall B, and one or more angle-irons, G, of the cap J, havingcentral groove, H, and side flanges, K, substantially as herein shownand described.

3. In an evaporator, the cap J, made, sub

stantially as herein shown and described, with side flanges, K, and acentral groove, H, substantially as herein shown and described, to

adapt it to be interposed between the top of the partition-wall and thebottom of the evaporating-pan and to receive the angle-irons attached tothe said pan, as set forth.

JOSEPH M. DUNCAN.

Witnesses: I

' E. O. MoNAIR,

AUGUsTUs FRANK.

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